
In the bosonic case, \(n = 2s\) , where \(s\ge 1\)  is an integer, the above expression is equivalent to those given in [1]}, [2]}.
It should be pointed out that the conformal spin-3 case, \(n=6\) ,
was studied for the first time in [3]}.
The spin-3/2 case, \(n=3\) ,
was considered in [4]}.
The field strength \(\mathfrak {C}_{\alpha (3)}(h)\)  is the linearised version of the
Cottino vector-spinor [5]}, [6]}.
